ZXLD1321
High-side current monitor
Symbol
VM_VIN
VMON
IM_LOAD
TCO
(MON)
BW
Parameter
Supply voltage
Sense voltage
Input current
Temperature coefficient
Bandwidth
Gm
Transconductance
⌬Iout/⌬VMON
Acc
Accuracy
Conditions
Min Typ Max Units
3
18 V
=V(M_VIN) – V(M_LOAD) 0 100 200 mV
Measured into M_LOAD pin
0.08 1 µA
VMON=10mV
VMON=100mV
370
ppm/
150
K
VMON=10mV
VMON=100mV
350
KHz
2.5
MHz
1
mA/V
RM = 0.1Ω
-3
3
%
VMON = 100mV
Reference current monitor
Symbol
VADJ
TCO
(MON)
BW
Gm
Acc
Parameter
Adjust Voltage
Temperature Coefficient
Bandwidth
Transconductance
⌬Iout/⌬VADJ
Accuracy
Conditions
VADJ=50mV
VADJ=500mV
VADJ=50mV
VADJ=500mV
VADJ=500mV
Min Typ Max Units
0
500 mV
160
ppm/
200
K
275
KHz
3
MHz
200
µA/V
-3
3
%
LED thermal control circuit (TADJ) parameters
Symbol
VTADJH
Parameter
Upper threshold voltage
VTADJL
Lower threshold voltage
Gm(TADJ) Transconductance
⌬Iout/⌬VTADJ
Conditions
Min
Onset of output current
reduction (VTADJ falling)
Output current reduced to
<10% of set value
(VTADJ falling)
Typ Max Units
75
mV
50
mV
4
mA/V
Issue 1 - January 2008
7
© Zetex Semiconductors plc 2008
www.zetex.com